<template>
  <div class="user" ref="userRef">
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card class="box-card" shadow="always">
      <!-- 搜索添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入用户名" v-model="queryInfo.query"  clearable @clear=" _getUserList">
            <el-button slot="append" icon="el-icon-search" @click=" _getUserList" ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" size="default" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 列表区域 -->
      <el-table :data="userlist" border stripe  ref="tableRef" :height="height">
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
       <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[10,20,30,40,50]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
     <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
     <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div class="role">
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script scoped>
import { getUserList, changeState, addUser, getUserInfo, editUser, deleteUser, addRole } from 'network/api/home.js'
import { getRoles } from 'network/api/power.js'
export default {
  name: 'User',
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }

      cb(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的手机号'))
    }
    return {
      userlist: [],
      height: undefined, // 表格高度
      queryInfo: { // 获取用户列表的参数对象
        query: '',
        pagenum: 1, // 当前第几页
        pagesize: 10 // 每页显示几条
      },
      total: 0,
      // 以下为添加表单参数配置
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '用户名的长度在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 以下为修改用户界面参数配置
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''

    }
  },
  created () {
    // 获取用户列表
    this._getUserList()
    console.log(this.$refs.userRef)
  },
  components: {},
  methods: {
    // 获取用户列表
    async _getUserList () {
      console.log('enter')
      const res = await getUserList(this.queryInfo)
      console.log(res)
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败!')
      this.total = res.data.total
      this.userlist = res.data.users
    },
    // 每页显示数据改变
    handleSizeChange (val) {
      this.queryInfo.pagesize = val
      this._getUserList()
    },
    // 当前页码改变
    handleCurrentChange (val) {
      this.queryInfo.pagenum = val
      this._getUserList()
    },
    async userStateChanged (row) {
      const res = await changeState(row)
      if (res.meta.status !== 200) return this.$message.error('更新用户状态失败!')
      this.$message.success('成功更新用户状态')
    },
    // 添加新用户
    addUser () {
      // 若验证通过，则添加数据
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return '' // 验证不通过
        // 向后端添加用户
        const res = await addUser(this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 隐藏对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this._getUserList()
      })
    },
    // 关闭添加用户对话框
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 打开edit对话框
    async showEditDialog (id) {
      // 获取用户信息
      const res = await getUserInfo(id)
      if (res.meta.status !== 200) return this.$message.error('查询用户信息失败!')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 关闭editDialog时，表单重置为空
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息提交后端
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return ''
        // 将修改用户信息保存至后端
        const res = await editUser(this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更改用户信息失败!')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新用户列表
        this._getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功!')
      })
    },
    // 删除用户
    async removeUserById (id) {
      const confirmRes = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmRes !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const res = await deleteUser(id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }

      this.$message.success('删除用户成功！')
      // 刷新用户列表
      this._getUserList()
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 获取所有的角色列表
      const res = await getRoles()
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮 分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      // 添加角色
      const res = await addRole(this.userInfo.id, this.selectedRoleId)
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')
      this._getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  },
  mounted () {
    this.height = this.$refs.userRef.offsetHeight - 172
  }
}
</script>

<style lang='less' scoped>
  .user {
    height: 100%;
  }
  .role>p{
    margin-bottom: 20px;
  }
</style>
